Add gods, go data structure.

README.md

@@ -210,6 +210,7 @@ Please take a quick gander at the [contribution guidelines](https://github.com/a
 * [go-adaptive-radix-tree](https://github.com/plar/go-adaptive-radix-tree) - A Go implementation of Adaptive Radix Tree.
 * [go-datastructures](https://github.com/Workiva/go-datastructures) - a collection of useful, performant, and thread-safe data structures
 * [go-geoindex](https://github.com/hailocab/go-geoindex) - In-memory geo index.
+* [gods](https://github.com/emirpasic/gods) - Go Data Structures. Containers, Sets, Lists, Stacks, Maps, BidiMaps, Trees, HashSet etc.
 * [golang-set](https://github.com/deckarep/golang-set) - Thread-Safe and Non-Thread-Safe high-performance sets for Go.
 * [goskiplist](https://github.com/ryszard/goskiplist) - A skip list implementation in Go.
 * [mafsa](https://github.com/smartystreets/mafsa) - MA-FSA implementation with Minimal Perfect Hashing